NEWS: add bzip3 file format documentation
diff --git a/NEWS b/NEWS
index 5d22553..5ae3ae6 100644
--- a/NEWS
+++ b/NEWS
@@ -10,3 +10,4 @@ v1.1.2:
v1.1.3:
* fix a serious stdin/stdout CRLF bug on Windows that corrupted the data.
* imply `-c` when a stream isn't opened thus preventing potential UB.
+* bzip3 file format documentation.
